Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Me diga a soma do Ano para o resultado do vice-campeão do campeonato mundial de dardos.
 ###Tabelas: CREATE TABLE pdc_premier_event_finals:_5_1_title_4_runner-ups (pdc_premier_event_finals:_5_1_title_4_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Opponent in the final VARCHAR, Score (l) = score in legs, (s) = score in sets. VARCHAR) CREATE TABLE complete_american_le_mans_series_results (complete_american_le_mans_series_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Entrant VARCHAR, Class VARCHAR, Chassis VARCHAR, Engine VARCHAR, Rank VARCHAR, Points VARCHAR) CREATE TABLE 2005_broadway_revival (2005_broadway_revival_id AUTO_INCREMENT PRIMARY KEY, Year INT, Award Ceremony VARCHAR, Category VARCHAR, Nominee VARCHAR, Result VARCHAR) CREATE TABLE notable_former_players (notable_former_players_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Club VARCHAR, Position VARCHAR, Years VARCHAR, Current status VARCHAR) CREATE TABLE fed_cup_doubles_performances_0–5 (fed_cup_doubles_performances_0–5_id AUTO_INCREMENT PRIMARY KEY, Edition VARCHAR, Round VARCHAR, Date VARCHAR, Partnering VARCHAR, Against VARCHAR, Surface VARCHAR, Opponents VARCHAR, Result VARCHAR)  
SELECT SUM Year FROM pdc_premier_event_finals:_5_1_title_4_runner-ups WHERE Outcome = runner-up AND Championship = world darts championship